tonight's face-off between vice than vit joe biden and congressman paul ryan is getting a lot more attention than vice presidential debates usually get. the obama campaign is looking to biden to stop the momentum mitt , mney has enjoyed since the debate in denver, which governor romney was widely perceived to job is . ling.s job is to keep romney's al gallu rolling. today's national gallup poll of likely voters shows governor romney with a slender lead of one point over the president. of course, that's within the lly a tie.error so it's essentially a tie. tonight's debate is at centre college in danville, kentucky. nancy cordes and jan crawford danville. first we'll go to nancy, covering the vice president's campaign. nancy. >> reporter: scott the vice president arrived here in kentucky today after several days of intense preparation in his home state of delaware and several people there with him veld us the president's weak performance in his own debate didn't so much change the ndrategy as raise the stakes and they say the vice president is very well aware he needs to have a better night t